13581073 has 16 divisors (see below), whose sum is σ = 15333120. Its totient is φ = 11923200.

The previous prime is 13581053. The next prime is 13581083. The reversal of 13581073 is 37018531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13581073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13581053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56233 + ... + 56473.

It is an arithmetic number, because the mean of its divisors is an integer number (958320).

Almost surely, 2^13581073 is an apocalyptic number.

It is an amenable number.

13581073 is a deficient number, since it is larger than the sum of its proper divisors (1752047).

13581073 is a wasteful number, since it uses less digits than its factorization.

13581073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13581073 is about 3685.2507377382. The cubic root of 13581073 is about 238.5858563096.

The spelling of 13581073 in words is "thirteen million, five hundred eighty-one thousand, seventy-three".